scholarly journals ASPEK BIOLOGI IKAN LAYUR (Lepturacanthus savala Cuvier, 1829) DI PERAIRAN PANGANDARAN, JAWA BARAT

2017 ◽  
Vol 9 (2) ◽  
pp. 133
Author(s):  
Puput Fitri Rachmawati ◽  
Sri Turni Hartati
Keyword(s):  
Mortality Rate ◽  
Average Length ◽  
Total Mortality ◽  
Demersal Fish ◽  
Parameter Analysis ◽  
Assessment Tools ◽  
Population Parameter ◽  
Fish Production ◽  
Length Frequency ◽  
Lepturacanthus Savala

Sumberdaya ikan demersal di perairan Pangandaran mendominasi hasil tangkapan sebesar 32,90 % dari total produksi ikan secara keseluruhan, pada tahun 2015 jenis ikan layur (Lepturacanthus savala) berkontribusi sebanyak 47,31 % dari total produksi ikan demersal, merupakan salah satu jenis ikan demersal yang bernilai ekonomis tinggi. Penelitian ini bertujuan untuk mengetahui aspek biologi dan parameter populasi L. savala di perairan Pangandaran. Penelitian dilakukan pada bulan Juni – Desember 2015, data yang terkumpul meliputi panjang dan berat ikan, jenis kelamin, tingkat kematangan gonad, berat gonad, serta data statistik perikanan. Analisis parameter populasi didasarkan pada data length-frequency panjang dan dilakukan dengan bantuan program FiSAT II (FAO-ICLARM Stock Assesment Tools II). Hasil menunjukkan hubungan panjang-berat bersifat alometrik negatif dengan nilai b = 2,92; nisbah kelamin jantan terhadap betina 1,0:3,2. Panjang rata-rata ikan tertangkap lebih besar dari panjang pertama kali matang gonad (L50% = 57,19 cmTL > Lm = 47,23 cmTL). Panjang asimtotik (L) sebesar 111,00 cmTL, laju pertumbuhan (K) sebesar 0,56/tahun. Selanjutnya laju kematian total (Z) sebesar 3,46/tahun, laju kematian alami (M) sebesar 0,85/tahun, dan laju kematian akibat penangkapan (F) sebesar 2,61/tahun; sehingga laju eksploitasi (E) sebesar 0,75, terindikasi kondisi fully exploited. Jika dibiarkan kondisi tersebut dapat mengarah pada recruitment overfishing. Untuk menjaga keberlangsungan kelestarian sumberdaya L. savala, pengelolaan dapat dilakukan dengan cara membatasi intensitas penangkapan, memperbesar ukuran mata jaring, dan penetapan kawasan reservat terhadap sejumlah stok induk yang memadai. The fish production in the Pangandaran waters dominated demersal fish resources by 32.90% of total landed in 2015. Savalai hairtail contributes 47,31% to total demersal fish production. This study aims to determine the biological aspects and population parameters of Lepturacanthus savala in Pangandaran waters. Data collection conducted in June - December 2015, with data collected including length and weight, sex, the maturity level of gonads, gonad weight, and fishery statistics data. Population parameter analysis based on length-frequency data was done by using FAO-ICLARM Stock Assessment Tools II (FiSAT II) program. The result shows a negative allometric growth pattern (b = 2,92) and sex ratio of male to female has a ratio of 1,0: 3,2. The average length of the fish is caught is greater than the length of the first mature gonad (L50% = 57,19 cmTL> Lm = 47,23 cmTL). Analysis of fish population parameter obtained asymptotic length (L) = 111,00cmTL, growth rate (K) = 0,56/year, total mortality rate (Z) = 3,46/year, natural mortality rate (M) = 0,85/year, catch mortality rate (F) = 2,61/year, so that the rate of exploitation (E) = 0,75, indicated fully exploited condition. If left unchecked, the condition may lead to recruitment overfishing. To maintain the sustainability of L. savala resources, management can be done by limiting the intensity of catching, maximazing the mesh size, and determining the reserved area against a sufficient number of parent stocks.

scholarly journals PARAMETER POPULASI UDANG PUTIH (Penaeus merguiensis) DI PERAIRAN SAMPIT DAN SEKITARNYA, KALIMANTAN TENGAH

2015 ◽  
Vol 7 (2) ◽  
pp. 103
Author(s):  
Erfind Nurdin ◽  
Duranta D Kembaren
Keyword(s):  
Mortality Rate ◽  
Stock Assessment ◽  
Total Mortality ◽  
Assessment Tools ◽  
White Shrimp ◽  
Population Parameter ◽  
Exploitation Rate ◽  
Shrimp Fisheries ◽  
Penaeus Merguiensis ◽  
Closed Season

Udang putih (Penaeus merguiensis)merupakan salah satu sumberdaya ekonomis penting di perairan Sampit. Pada saat ini alat tangkap yang efisien untukmenangkap udang adalah lampara dasar (danishseine) dan jaring tiga lapis (trammel net). Penelitian tentang tingkat pengusahaan udang putih telah dilakukan dari bulan Januari sampai bulan Nopember 2012. Penilaian estimasi parameter populasi udang putih menggunakan paket program “FAO – ICLARM Stock Assessment Tools” atau FISAT - II. Hasil analisis diperoleh nilai laju pertumbuhan (K) sebesar 1,45 per tahun dengan panjang karapas asimtotik (CL”) 57,8 mm. Laju kematian total (Z) sebesar 5,70 per tahun, laju kematian alamiah (M) sebesar 1,93 per tahun dan laju kematian akibat penangkapan (F) sebesar 3,77 per tahun. Tingkat pengusahaan udang putih di perairan Sampit telah mengalami lebih tangkap (over exploited) dengan nilai E sebesar 0,66. Udang putih sudah tertangkap terlebih dahulu sebelum mencapai ukuran pertama kali matang gonad (Lc=30,05 < Lm=39,4 mmCL). Kondisi ini mengindikasikan perlunya dilakukan pengelolaan yang hati-hati dan bertanggungjawab. Salah satu cara yang dapat ditempuh adalah denganmenerapkan sistem penutupan musim tangkapan, khususnya pada bulan Maret dan September, karena pada saat tersebut terjadi puncak pemijahan.White shrimp (Penaeus merguiensis) is one of the most valuable resources in the Sampit waters. At present danish seine and trammel net is an efficient gear available to catch shrimp. A study of exploitation of white shrimp was carried out from January to November 2012. Estimation of population parameter of white shrimp were analyzed by using program “FAO – ICLARM Stock Assessment Tools (FiSAT-II). The result showed that the value of growth rate (K) was 1.45/year with asymptotic carapace length (CL”) was 57.8 mm. Total mortality rate (Z) was 5.70/year, natural mortality rate (M) was 1.93/year and fishing mortality rate (F) was 3.77/year. Exploitation rate of white shrimp indicated overexploited (E=0.66). Moreover, these shrimp was fished before reaching the first size on maturity (Lc=30.05 < Lm=39.4 CLmm). This condition indicate that it is necessary to manage shrimp fisheries carefully and responsibly. It is recommended to apply a closed season system, especially on March and September when peak of spawning season occurred.

scholarly journals PARAMETER POPULASI IKAN BAWAL PUTIH (Pampus argenteus) DI PERAIRAN TARAKAN, KALIMANTAN TIMUR

2015 ◽  
Vol 7 (3) ◽  
pp. 165
Author(s):  
Prihatiningsih Prihatiningsih ◽  
Nurainun Mukhlis ◽  
Sri Turni Hartati
Keyword(s):  
Frequency Analysis ◽  
Average Length ◽  
Total Mortality ◽  
Assessment Tools ◽  
Growth Equation ◽  
Population Parameters ◽  
Length Frequency ◽  
Pampus Argenteus ◽  
Exploitation Rate ◽  
Length Frequency Analysis

Ikan bawal putih (Pampus argenteus) mempunyai nilai ekonomis penting dan sebagai salah satu komoditas unggulan di perairan Tarakan. Informasi tentang biologi perikanan ikan tersebut masih terbatas. Penelitian ini bertujuan untukmengestimasi parameter populasi meliputi pertumbuhan, umur, mortalitas dan tingkat eksploitasi ikan bawal putih. Data frekuensi panjang bulanan dikumpulan pada Februari – Nopember 2013 dengan bantuan enumerator. Sebaran frekuensi panjang ikan dipisahkan kedalam sebaran normal menggunakan metode Bhattacharya pada progran FiSAT (FAO-ICLARM Stock Assessment Tools). Estimasi parameter populasi dengan aplikasi model analitikmenggunakan program ELEFAN-1 (Electronic Length Frequency Analysis). Hasil penelitian menunjukkan ukuran panjang ikan bawal putih berkisar antara 9,0 cm–35,0 cmFL. Hubungan panjangberat ikan bawal putih yang tertangkap dengan jaring insang bersifat allometrik negatif mengikuti persamaan W= 0,187L2,374. Nilai rata-rata panjang ikan pada saat pertama kali tertangkap (Lc) sama dengan ukuran pertama kali matang gonad (Lm). Laju pertumbuhan (K) sebesar 0,52/tahun dan panjang asimptotik (L ) sebesar 37,28 cmFL. Persamaan pertumbuhan dari Von Bertalanffy sebagai Lt = 37,28 (1 – e-0,52(t-+0,07)). Mortalitas alami (M) adalah 1,11/tahun, mortalitas karena penangkapan (F) = ,65/tahun dan mortalitas total (Z) = 1,65/tahun. Laju pengusahaan (E) sebesar 0,60 berarti tingkat eksploitasinya sudah melebihi dari nilai optimal (E=0,5) atau populasi ikan bawal putih dalam keadaan lebih tangkap (over exploited). Untuk itu diperlukan kebijakan pengelolaan secara hati-hati dengan mempertimbangkan aspek biologi dan aspek penangkapan yang sedang berjalan.White pomfret (Pampus argenteus) is one of the economically important fish and includes leading commodity in Tarakan waters. Information of fishing biology of those species were still limited. This study aims to determine the population parameters including growth, age, mortality and exploitation rate of white pomfret. Monthly length frequency data have been collected by enumerator from February to November 2013. Fish lengthfrequency distribution was separated into a normal distribution using the Bhattacharya method with software of FiSAT (FAO-ICLARMStock Assessment Tools). Estimation of population parameters were use analytical model application with ELEFAN-1 (Electronic Length Frequency Analysis) program. The results showed that lengths distribution of white pomfret ranged beetwen 9.0 cm -35.0 cmFL. Length-weight relationship was negatively allometric. Estimating the average length at first captured (Lc) was equal with average length at first maturity (Lm) with growth equation of Lt = 37.28 (1 - e-0, 52 (t +0.07)). Natural mortality (M) was 1.11/year, fishing mortality (F) was 1.65/yearand total mortality (Z) was 1.65/ year. The exploitation rate (E) was 0.60. It is mean that more higher than optimal exploitation so that the white pomfret fish population in a state of over fished. It is necessary to better policy in the management of white pomfret through precaution approach and describing of biologycal and fishing aspect in Tarakan, Kalimantan Timur.

scholarly journals KARAKTERISTIK POPULASI DAN TINGKAT PEMANFAATAN KEPITING BAKAU (Scylla serrata Forskal 1775) DI PERAIRAN ASAHAN DAN SEKITARNYA, SUMATERA UTARA

2018 ◽  
Vol 24 (3) ◽  
pp. 165
Author(s):  
Andina Ramadhani Putri Pane ◽  
Ali Suman
Keyword(s):  
Mortality Rate ◽  
Stock Assessment ◽  
Carapace Width ◽  
Total Mortality ◽  
Population Characteristics ◽  
Assessment Tools ◽  
Scylla Serrata ◽  
Mud Crab ◽  
Length Frequency ◽  
Mangrove Crab

Peningkatan jumlah ekspor kepiting (Scylla serrata Forskal, 1775) di wilayah perairan Asahan memacu peningkatan penangkapan yang dapat berpengaruh terhadap populasi dan kelestarian. Penelitian ini bertujuan untuk mengetahui karakteristik populasi dan tingkat pemanfaatan kepiting bakau di perairan Asahan dan sekitarnya. Pengambilan sampel dilakukan setiap bulan dari Januari sampai dengan Nopember 2016 di tempat pendaratan kepiting oleh enumerator. Data dianalisa dengan metode Electronic LEngth Frequency Analisys-I (ELEFAN-I) dari FAO-ICLARM Stock Assessment Tools II (FiSAT II). Hasil penelitian menunjukkan pola pertumbuhan kepiting bakau bersifat allometrik negatif pada kisaran lebar karapas antara 85 - 175 mm dan bobot tubuh 127 – 1.152,5 gram. Rata-rata ukuran lebar karapas tertangkap dengan jaring dan bubu adalah 118,6 mm dan ukuran matang gonad pertama kali adalah 120,6 mm. Laju pertumbuhan (K) 1,38 per tahun dan lebar karapas maksimum (CW) sebesar 201 mm. Laju kematian total (Z) sebesar 3,59 per tahun, laju kematian karena penangkapan (F) dan laju kematian alami (M) masing-masing 2,27 per tahun dan 1,32 per tahun. Laju pemanfaatan (E) kepiting bakau di perairan Asahan adalah 0,63 per tahun atau sudah melebihi nilai optimum penangkapan. Agar sumber daya kepiting terjamin kelestariannya, maka harus dilakukan pengurangan upaya penangkapan sekitar 26 %.Increase in the volume of giant mud crab exports (Scylla serrata Forskal, 1775) in the Asahan waters stimulate the increasing catches that affect population and sustainability. This study aims to determine the population characteristics and the exploitation level of giant mud crab in Asahan and adjacent waters. Monthly sampling was done from January to November 2016 at crab landing sites by enumerator. The data were analyzed using Electronic Length Frequency Analysys-I (ELEFAN-I) method available in FAO-ICLARM Stock Assessment Tools II (FiSAT II) program. The results showed that the growth pattern of giant mud crab was negative allometric with carapace width between 85 - 175 mm and individual body weight 127 - 1,152.5 grams. The average carapace’s width caught by net and trap was 118.6 mm and the size of gonad first maturity was 120.6 mm. Growth rate (K) 1.38 per year and maximum carapace width (CW) of 201 mm. Total mortality rate (Z) of 3.59 per year, mortality rate due to fishing (F) and natural mortality rate (M) was 2.27 per year and 1.32 per year respectively. The rate of exploitation (E) of mangrove crab in Asahan waters was 0.63 or has exceeded the optimum value. For the sustainability of crab resource a reduction of 26% in fishing effort is suggested.

scholarly journals POPULATION DYNAMICS OF MALAYAN LEAF FISH (Pristolepisgrooti Blkr.) IN RANAU LAKE, SOUTH SUMATRA

2018 ◽  
Vol 24 (2) ◽  
pp. 125
Author(s):  
Sevi Sawetri ◽  
Subagdja Subagdja ◽  
Dina Muthmainnah
Keyword(s):  
Mortality Rate ◽  
Growth Parameters ◽  
Total Mortality ◽  
Natural Mortality ◽  
Fishing Mortality ◽  
Frequency Data ◽  
Length Frequency ◽  
Lake Ecosystems ◽  
Exploitation Rate ◽  
Length Frequency Data

The Malayan leaf fish or locally named as kepor (Pristolepis grooti) is one of important biotic components in Ranau Lake ecosystems. This study aimed to estimate population dynamic and exploitation rate of kepor in Ranau Lake, South Sumatera. The population parameters are estimated based on length frequency data which were collected in March to October 2013. Growth parameters and fishing mortality rates were calculated using FiSAT software package. The results showed that kepor’s growth was negative allometric, which tended to gain length faster than weight. Kepor population was dominated (42%) by individual length of 10.0 to 11.0 cm. Predicted length infinity (L) was 17.28 cm with high value of growth rates (K) of 1.4 year-1. The natural mortality rate (M) is 2.57 year-1, the fishing mortality rate (F) is 5.36 year-1 and total mortality rate (Z) is 7.93 year-1. The exploitation rate of Malayan leaf fish in Ranau Lake (E = 0.68 year-1) has passed the optimum score.  

scholarly journals Preliminary observations on the effect of sudden changes of temperature on survival of young Matrinxã (Brycon cephalus) under laboratory conditions

2003 ◽  
Vol 33 (4) ◽  
pp. 719-722 ◽  
Author(s):  
Sérgio Fonsêca Guimarães ◽  
Atílio Storti Filho
Keyword(s):  
Mortality Rate ◽  
Initial Temperature ◽  
Average Length ◽  
Geographical Area ◽  
Total Mortality ◽  
Average Weight ◽  
Amazonian Fish ◽  
Different Temperatures ◽  
Species Groups ◽  
Preliminary Study

Matrinxã is a very promising amazonian fish for fish culture in Brazil. This study is aimed at determining the approximate tolerated temperature range in this species. Groups of ten young matrinxã specimens (15.1±0.8 cm average length and 58.3±10.3 g average weight) were subjected to 9 different temperatures for 24 hours without previous acclimation. Fish were transferred from an initial temperature of 27ºC to those ranging from 12 to 39ºC at 3ºC intervals. Both 12ºC and 39ºC temperatures were lethal for this species with 100% mortality rate. Following 2 minutes of exposure to 39ºC fish changed behavior, showing an increase in opercular movements and erratic swimming; mortality reached 100% after 18 minutes. At 12ºC, fish lost equilibrium immediately after exposure and started swimming erratically; after only 4 minutes fish became lethargic and remained immobile on the bottom of the tank. Total mortality was only evident following 24 hours. At 15ºC matrinxã lost equilibrium after 5 to 6 minutes of exposure but mortality was only 20% after 24 hours. Fish tolerated well temperatures ranging from 18 to 36ºC with 100% survival after 24 hours. This preliminary study suggests that temperatures between 18 and 36ºC are the approximate range normally tolerated by this species, although survival at other temperatures may be increased by gradually acclimating fish to the more severe increases or decreases in temperature. In addition, it indicates that matrinxã may be cultivated over a wide geographical area.

scholarly journals Estimating total mortality and asymptotic length of Crangon crangon between 1955 and 2006

2010 ◽  
Vol 67 (5) ◽  
pp. 875-884 ◽  
Author(s):  
Marc Hufnagl ◽  
Axel Temming ◽  
Volker Siegel ◽  
Ingrid Tulp ◽  
Loes Bolle
Keyword(s):  
Total Mortality ◽  
Demersal Fish ◽  
Crangon Crangon ◽  
Length Frequency ◽  
Growth Constant ◽  
Mean Values ◽  
Frequency Distributions ◽  
The 1960S ◽  
Mortality Estimates

Abstract Hufnagl, M., Temming, A., Siegel, V., Tulp, I., and Bolle, L. 2010. Estimating total mortality and asymptotic length of Crangon crangon between 1955 and 2006. – ICES Journal of Marine Science, 67: 875–884. Total mortality (Z, year−1) of southern North Sea brown shrimp (Crangon crangon) was determined as Z = θK, based on the von Bertalanffy length–growth constant (K, year−1) and θ derived from length-based methods. Mortality estimates were based on length frequency distributions obtained from four long-term dataseries (1955–2006): German Demersal Young Fish Survey, Dutch Demersal Fish Survey, and two German Bycatch series (Büsum and East Frisia). Four methods to estimate θ and L∞ were evaluated. Highest total mortality (Z = 8 year−1) was estimated for the early 1990s, and the lowest (Z = 4 year−1) for the 1960s. Accounting for these differences, a median Z rather than mean values was calculated for the whole series, and the value ranged from 5.74 (Ssentongo and Larkin method), through 5.65 (Beverton and Holt method) and 5.64 (Jones and Zalinge method), to 5.35 (length-converted catch curves). Over the whole period, an increase in θ and a decrease in the proportion of shrimps >60 mm in the catch was observed, whereas asymptotic length L∞ remained constant (at 79.3 mm total length).

scholarly journals PARAMETER PERTUMBUHAN HIU MACAN (Galeocerdo cuvier Peron & Lesuer, 1822) DI PERAIRAN SELATAN NUSA TENGGARA BARAT

2019 ◽  
Vol 24 (4) ◽  
pp. 253 ◽  
Author(s):  
Umi Chodrijah ◽  
Agus Arifin Sentosa ◽  
Prihatiningsih Prihatiningsih
Keyword(s):  
Mortality Rate ◽  
Indian Ocean ◽  
Average Length ◽  
Conservation Status ◽  
Total Mortality ◽  
Landing Site ◽  
Iucn Red List ◽  
Tiger Shark ◽  
Galeocerdo Cuvier ◽  
Total Length

Hiu macan (Galeocerdo cuvier Peron & Lesuer, 1822) merupakan predator puncak yang ditandai dengan sebaran yang luas dan ukurannya lebih besar.  Spesies hiu ini masuk dalam famili Carcharhinidae yang banyak tertangkap di perairan Samudera Hindia. Status konservasi jenis ini masuk dalam Daftar merah IUCN dan hampir terancam (NT) serta informasi tentang biologi khususnya parameter pertumbuhan spesies ini masih sangat terbatas.Tujuan penelitian adalah untuk mendapatkan informasi parameter pertumbuhan hiu macan di perairan Samudera Hindia bagian Selatan Nusa Tenggara Barat. Penelitian dilakukan di tempat pendaratan ikan  Tanjung Luar, Lombok Timur pada bulan Januari sampai dengan Desember 2016. Pengamatan meliputi panjang total tubuh dan jenis kelamin yang dilakukan dengan pengukuran dan pengamatan langsung secara visual di lapangan. Hasil penelitian terhadap 808 ekor ikan contoh menunjukkan bahwa kisaran panjang total untuk hiu macan (Galeocerdo cuvier)  terdistribusi pada ukuran antara 116 - 400 cmTL dengan panjang rata-rata 242,8 cm TL serta modus pada ukuran 240 cmTL. Perbandingan kelamin ikan hiu macan  jantan dan betina dalam keadaan tidak seimbang, dengan jumlah jantan lebih besar.  Estimasi panjang asimtotik (L∞) sebesar 420 cmTL dengan laju pertumbuhan (K) 0,260/tahun, laju kematian total (Z)  1,10/tahun, laju kematian alamiah (M) 0,35/tahun serta laju kematian akibat penangkapan (F) 0,75/tahun. Estimasi laju eksploitasi sudah mengarah kepada penangkapan yang berlebih (E = 0,68) oleh karena itu perlu dilakukan tindakan pengelolaan agar pemanfaatannya tetap lestari.Tiger sharks (Galeocerdo cuvier Peron & Lesuer, 1822) were widely held in the depths of the Indian Ocean. Its conservation status was on the IUCN Red List and was near threatened (NT). The purpose of this study was to obtain the parameters of growth in the South off West Nusa Tenggara waters. The study was conducted at Tanjung Luar landing site, East Lombok in January until December 2016. The observation included total length and sex with visual measurement and observation in the field. The results of the study showed the number of 808 individues that the total length range for tiger shark (Galeocerdo cuvier) caught in Indian Ocean waters landed on Tanjung Luar was distributed on a size between 116-400 cmTL with an average length of 242.8 cmTL and a mode at 240 cmTL. The sex ratio of male and female tiger sharks was in an unbalanced state, with larger females. Estimation of asymptotic length (L∞) of 420 cmTL with growth rate (K) 0.260 / year, total mortality rate (Z) 1.10 / year, natural mortality rate (M) 0.35 / year and mortality rate due to arrest (F) 0.75 / year. Estimation of the rate of exploitation has led to overfishing (E = 0.68) therefore it was necessary to take regulatory and management measures to ensure sustainable utilization.

scholarly journals Mortality Rate and Causing Factors in Ventilator Associated Pneumonia in Children

2021 ◽  
Vol 15 (6) ◽  
pp. 1917-1920
Author(s):  
Riffat Farrukh ◽  
Amber Naseer ◽  
Shaheen Masood ◽  
Ibrahim Shakoor ◽  
Farhina Nasir ◽  
...  
Keyword(s):  
Mortality Rate ◽  
Average Length ◽  
Total Mortality ◽  
Emergency Situation ◽  
Intravenous Sedation ◽  
Ventilator Associated Pneumonia ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test ◽  
One Year

Aim: To estimate the incidence of ventilator-associated pneumonia (VAP) and to identify causing microbiological organismsand VAP related mortality rate in children admitted to the ICU. Study design: This was a Cross-sectional and an observational study. Study place and duration: In the Pediatric department of Abbasi Shaheed Hospital, Karachi, for one-year duration from May 2020 to May 2021. Methodology: All admitted children to the pediatric ICU (PICU) and ventilated were selected and observed for any features suggestive of VAP. All suspected children have Partial septic signs. A VAP will be categorized ifchild remains on ventilator for more than 48 hours and when a patient had 2 of these signs of nosocomial infection - TLC <4,000 or> 15,000 mm3 , fever> 101 ° F, CRP> 48 mg / L, neutrophils> 85% or a new chest X-rayexhibited pneumonia withradiological sign of progressive, persistent or new infiltrates. The chi-square test was used for comparison of percentages with a value of Less than 0.05 p. Results: Of all the cases admitted, the average length of ICU stay was 8.65 ± 6.45 per day. Children who needed VAP required 14.2 ±9.5 days of ventilation and 7.5± 5.2 days for children who have not VAP progression. Of 100 cohort of children necessitating ventilation, 22 died and 2 were left without advice or serious illness, with a total mortality of 22%. Conclusion: The VAP incidence in this study was 22%. Features related with a higher incidence of ventilator-associated pneumonia include age <1-year, continuous intravenous sedation and unplanned intubation in emergency situation. Features suggestive of underlying VAP encompassed, CRP> 48 mg / L, purulent tracheal secretions, positive tracheal culture of aspirate and positive X-ray results. Key words: Ventilator-associated pneumonia (VAP), Nosocomial infections,PICU and Children.

scholarly journals PARAMETER POPULASI DAN POLA REKRUITMEN IKAN TONGKOL LISONG (Auxis rochei Risso, 1810) DI PERAIRAN BARAT SUMATERA

2015 ◽  
Vol 7 (3) ◽  
pp. 129
Author(s):  
Tegoeh Noegroho ◽  
Umi Chodrijah
Keyword(s):  
Mortality Rate ◽  
Frequency Analysis ◽  
Growth Parameters ◽  
Fork Length ◽  
Total Mortality ◽  
Von Bertalanffy ◽  
Population Parameters ◽  
Length Frequency ◽  
Exploitation Rate ◽  
Length Frequency Analysis

Perikanan neritik tuna di perairan Barat Sumatera berkembang pesat beberapa dekade terakhir ini. Sementara belum banyak diperoleh hasil penelitian tentang populasi ikan tongkol lisong (Auxis rochei). Penelitian tentang parameter populasi dan pola rekruitmen ikan tongkol lisong dilakukan pada bulan Februari-Desember 2013 di beberapa lokasi pendaratan ikan di Barat Sumatera. Tujuan penelitian ini adalah untuk memperoleh laju pertumbuhan, panjang asimptotik, laju kematian, laju eksploitasi, dan pola rekruitmen ikan tongkol lisong (Auxis rochei). Estimasi parameter populasi menggunakan model analitik berdasarkan program “Electronic Length Frequency Analysis (ELEFAN 1)”. Data frekuensi panjang dikumpulkan berkesinambungan di beberapa tempat pendaratan utama. Hasil penelitian menunjukkan panjang cagak ikan tongkol lisong yang tertangkap berada pada kisaran 11-42 cmFL. Parameter pertumbuhan Von Bertalanffy diperoleh nilai laju pertumbuhan (K) sebesar 0,54/tahun, panjang asimptotik (L ) sebesar 43,5 cm FL, dan umur ikan pada saat panjang ke-0 (-t0) sebesar -0,076/tahun. Laju mortalitas total (Z) sebesar 1,96/tahun. Laju kematian karena penangkapan (F) sebesar ,07/tahun, dan laju kematian alami (M) 0,89/tahun. Laju eksploitasi (E) tongkol lisong di Barat Sumatera adalah 0,49/tahun atau berada pada tingkat eksploitasi moderat. Pola rekrutmen tongkol lisong terjadi dua kali dalam setahunnya, yaitu mencapai puncak pada bulan Maret dan Juni.Neritic tuna fishery in theWest Sumatra waters was developed very intensively in the captured.Meanwhile, study population of bullet tuna (Auxis rochei) in those are still limited. Research in population parameters and recruitmen pattern of bullet tuna has been conducted in February-December 2013 based on several landing place inWest Sumatra. The aim of this study is to obtain asymptotic length, mortality rate, exploitation rate, and recruitment pattern of bullet tuna (Auxis rochei). Estimation of population parameters using an analytical model based on the program “Electronic Length Frequency Analysis (ELEFAN 1)”. Length frequency data collected continuously in themain landing places The results showed the fork length of bullet tuna was caught in the range 11-42 cm FL. Von Bertalanffy growth parameters obtained the growth rate value (K) of 0,54/year, asymptotic length (L ) of 43,5 cm FL, and fish age when the length to the-0 (-t0) of -0,076/year. Total mortality was 1,96/year. Fishing mortality rate (F) was 1,07/year and natural mortality rate (M) 0,89/year. The exploitation rate (E) of bullet tiuna in West Sumatra was 0,49 / year or are at a moderate level of exploitation. Recruitment patterns of bullet tuna happen twice in a year, which reached a peak in March and June.

scholarly journals BIOLOGI REPRODUKSI, PERTUMBUHAN DAN MORTALITAS IKAN EKOR KUNING (Caesio cuning Bloch, 1791) DI PERAIRAN NATUNA

2018 ◽  
Vol 10 (1) ◽  
pp. 1 ◽  
Author(s):  
Prihatiningsih Prihatiningsih ◽  
Isa Nagib Edrus ◽  
Bambang Sumiono
Keyword(s):  
Mortality Rate ◽  
Length Distribution ◽  
Total Mortality ◽  
Growth Parameter ◽  
Immature Stage ◽  
Optimum Level ◽  
Length Frequency ◽  
Potential Yield ◽  
Fish Samples ◽  
Exploitation Rate

Ikan ekor kuning (Caesio cuning) merupakan ikan ekonomis penting dan mendominasi hasil tangkapan bubu di perairan Natuna. Pada saat ini, produksinya merupakan dominan ke-2 setelah ikan bawal putih yaitu 2.891 ton/tahun (17,8% dari total produksi ikan). Populasi ikan ekor kuning sejak tahun 2008 menurun, diduga karena tingkat eksploitasi yang cenderung meningkat. Penelitian ini bertujuan mengkaji aspek biologi, meliputi reproduksi, pertumbuhan dan mortalitas ikan ekor kuning. Contoh ikan sebanyak 2.627 ekor dikumpulkan melalui tempat pendaratan ikan utama di Kijang, Pulau Bintan (Kepulauan Riau) dan Tanjung Pandan (Kepulauan Bangka Belitung) pada bulan Januari - Nopember 2014. Hasil penelitian menunjukkan sebaran ukuran panjang ikan ekor kuning berkisar antara 9,3-43,3 cmTL. Ikan yang tertangkap didominasi oleh belum matang gonad (immature). Musim pemijahannya berlangsung pada bulan Juni-Juli dan September-Oktober. Fekunditas telur yang matang gonad berkisar antara 13.355-151.632 butir. Panjang pertama kali ikan ekor kuning tertangkap dengan bubu adalah lebih kecil dari panjang pertama kali matang gonad (Lc<Lm), sehingga akan mengancam kelestariannya. Analisis pertumbuhan dengan uji-t diperoleh pertambahan panjang secepat pertambahan beratnya (isometrik). Aplikasi model analitik menggunakan program Electronic LEngth Frequency ANalisys-I (ELEFAN-I) diperoleh parameter pertumbuhan (=K) sebesar 0,6/tahun, panjang asimtotis (=L∞) sebesar 43,21 cmFL dan umur hipotesis ikan pada saat panjang sama dengan nol (=to) sebesar -0,24 tahun, sehingga persamaan pertumbuhan Von Bertalanffy sebagai Lt = 43,21 (1–e-0,6(t-0,24)). Parameter mortalitas menunjukkan laju kematian alami (=M) sebesar 1,17/tahun, laju kematian karena penangkapan (=F) sebesar 1,21/tahun dan laju kematian total (=Z) sebesar 2,38/tahun. Berdasarkan nilai F dan Z tersebut maka diperoleh estimasi laju eksploitasi (exploitation rate) sebesar 0,58 atau dalam kondisi sudah melampaui nilai optimum (E=0,5), sehingga pengelolaannya perlu segera dilakukan agar potensi lestarinya terjaga. The yellowtail fusilier (Caesio cuning) is one of the economically important fish caught by trap nets in Natuna waters. At present, the production of the yellowtail fusilier in Bintan regency as a second dominant fish species after white pomfret of 2.891 tons/year (17.8% of total landed). Population of the yellowtail fusiliers is likely decreasing since 2008 due to the increasing exploitation of this species. This study aims to assess the biological aspects including reproduction, growth and mortality of the yellowtail fusiliers. Monthly length frequencies data of 2.627 fish samples were collected through main landing place in Kijang, Bintan Island (Riau islands) and Tanjung Pandan (Bangka Belitung Islands) during January until November 2014. The results showed that the length distribution of the yellowtail fusilier ranged between 9.3 - 43.3 cmTL. The fish caught was dominated by the immature stage. The spawning seasons occurred between June-July and September-October. Fecundity of mature fish ranged between 13.355-151.632 eggs. The length of first capture by trap nets was under the length of first mature (Lc<Lm), so that will threaten its sustainability. Based on t-test it is showed that the weight growth pattern as fast as length growth (isometric). By using the analytical model application with Electronic LEngth Frequency ANalisys-I (ELEFAN-I) program, showed that the growth parameter (=K) was 0.6/yr, asymtotic length (=L∞) was 43.21 cmFl, and age at zero length (=to) was -0.24 yr, so the Von Bertalanffy’s equation growth curve were Lt = 43.21 (1–e-0,6(t-0,24)). Mortality parameters showed the natural mortality rate (=M) was 1.17/yr, fishing mortality rate (=F) was 1.21/yr, and total mortality rate (=Z) was 2.38/yr. Based on the values of F and Z obtained exploitation rate of 0.58 was likely exceed the optimum level (E=0.50) so that, management measures to maintain its potential yield should be applied. 

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